Web/Admin/UpFile/File.ashx

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<%@ WebHandler Language="c#" Class="File_WebHandler" Debug="true" %>
using System.IO;
using System;
using System.Data;
using System.Data.SqlClient;
using System.Text;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Web.SessionState;

public class File_WebHandler : IHttpHandler
{
    private const int UploadFileLimit = 4;//上传文件数量限制	
    string url = "";
    string _msg = "";
    private string sFile;
    private string dFile;
    private string syFile;

    private string Type = "";
    private string DirUrl = "";
    private string txtCompanyName;
    private string _isAddWater = "0";
    private string Oldimage;
    private string FilePic;
    private string weburl = "http://localhost:19832/web/";
    private string reUrl = "";
    
    public void ProcessRequest(HttpContext context)
    {
        int iTotal = context.Request.Files.Count;
        if (iTotal == 0)
        {
            _msg = "没有数据";
        }
        else
        {
            for (int i = 0; i < iTotal; i++)
            {
                try
                {
                    //取得上传文件信息，并替换其名称
                    HttpPostedFile file = context.Request.Files[i];

                    string strDay = System.DateTime.Now.ToString("yyyyMM");
                    string DirUrl = HttpContext.Current.Server.MapPath("~/upload/" + strDay + "/");
                    if (!System.IO.Directory.Exists(DirUrl))//检测文件夹是否存在，不存在则创建
                    {
                        System.IO.Directory.CreateDirectory(DirUrl);
                    }
                    string sFile = System.DateTime.Now.ToString("yyyyMMddHHmmssffff") + Path.GetExtension(file.FileName);
                    string Thumbnailfilename = DirUrl + "" + sFile;
                    if (!IsAllowedExtension(file, Thumbnailfilename))
                    {